Question

[(2ab^2)^-2(a^2b)^2]/[(3a^3b)^2(ab^3)^-2]

Answer 1

[(2ab^2)^-2(a^2b)^2]/[(3a^3b)^2(ab^3)^-2]
=[（1/4)*a的-2次幂*b的-4次幂*a的4次幂*b的2次幂]/(9*a的6次幂*b的2次幂*a的-2次幂*b的-6次幂)
=(1/36)*a的2次幂*b的-2次幂/(a的4次幂*b的-4次幂)
=(1/36)*a的-2次幂*b的2次幂

Answer 2

2ab[(2ab)^2-3b(ab+a^2b)-ab^2] =2ab(4a^2b^2-3ab^2+3a^2b^2-ab^2) =2ab(7a^2b^2-4ab^2) =2a^2b^3(7a-1) (2ab^2)^-2(